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#787 adding dns test to script

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This commit is contained in:
rootzoll 2020-01-20 19:24:41 +01:00
parent 6d1c61f00d
commit fb871d38ec
1 changed files with 39 additions and 3 deletions
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42
home.admin/config.scripts/internet.dns.sh
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@ -3,15 +3,48 @@
# command info
if [ $# -eq 0 ] || [ "$1" = "-h" ] || [ "$1" = "-help" ]; then
echo "config script to set a the DNS server that should be used"
echo "internet.dns.sh [DNS-SERVER]"
echo "internet.dns.sh [DNS-SERVER|test]"
exit 1
fi
# 1. parameter
DNSSERVER="$1"
# 2. parameter
NODIALOG="$1"
# just in case a reboot is needed after test dialog
autoreboot=0
# run test if DNS is working (assuming that internet is working)
if [ "${DNSSERVER}" = "test" ]; then
dnsworking=$(host w3c.org | grep -c "w3c.org has address")
# when no dialog just return result of test and exit
if [ "${NODIALOG}" = "nodialog" ]; then
echo "dnsworking=${dnsworking}"
exit 0
fi
# when dns not working ask in dialog to set a preset DNS
whiptail --title ' DNS Test Failed ' --yes-button='Set DNS 1.1.1.1' --no-button='Ignore' --yesno "It looks like your DNS within local network is not working.\n
Do you want to set the fixed DNS 1.1.1.1 by cloudfare (they claim they provide privacy) for your RaspiBlitz and reboot?\n
" 10 64
if [ $? -eq 0 ]; then
echo "SETTING 1.1.1.1"
DNSSERVER="1.1.1.1"
autoreboot=1
else
echo "Ignoring DNS-Test fail"
fi
exit 1
fi
echo "The DNS server you want to set is: ${DNSSERVER}"
# checking for IP address
# checking parameter
if [[ $DNSSERVER =~ ^(([0-9a-fA-F]{1,4}:){7,7}[0-9a-fA-F]{1,4}|([0-9a-fA-F]{1,4}:){1,7}:|([0-9a-fA-F]{1,4}:){1,6}:[0-9a-fA-F]{1,4}|([0-9a-fA-F]{1,4}:){1,5}(:[0-9a-fA-F]{1,4}){1,2}|([0-9a-fA-F]{1,4}:){1,4}(:[0-9a-fA-F]{1,4}){1,3}|([0-9a-fA-F]{1,4}:){1,3}(:[0-9a-fA-F]{1,4}){1,4}|([0-9a-fA-F]{1,4}:){1,2}(:[0-9a-fA-F]{1,4}){1,5}|[0-9a-fA-F]{1,4}:((:[0-9a-fA-F]{1,4}){1,6})|:((:[0-9a-fA-F]{1,4}){1,7}|:)|fe80:(:[0-9a-fA-F]{0,4}){0,4}%[0-9a-zA-Z]{1,}|::(ffff(:0{1,4}){0,1}:){0,1}((25[0-5]|(2[0-4]|1{0,1}[0-9]){0,1}[0-9])\.){3,3}(25[0-5]|(2[0-4]|1{0,1}[0-9]){0,1}[0-9])|([0-9a-fA-F]{1,4}:){1,4}:((25[0-5]|(2[0-4]|1{0,1}[0-9]){0,1}[0-9])\.){3,3}(25[0-5]|(2[0-4]|1{0,1}[0-9]){0,1}[0-9]))$ ]]; then
echo "OK IPv6"
elif [[ $DNSSERVER =~ ^([0-9]{1,2}|1[0-9][0-9]|2[0-4][0-9]|25[0-5])\.([0-9]{1,2}|1[0-9][0-9]|2[0-4][0-9]|25[0-5])\.([0-9]{1,2}|1[0-9][0-9]|2[0-4][0-9]|25[0-5])\.([0-9]{1,2}|1[0-9][0-9]|2[0-4][0-9]|25[0-5])$ ]]; then
@ -40,4 +73,7 @@ fi
echo "OK"
echo ""
echo "DNS Server is set - reboot needed before active"
echo "DNS Server is set - reboot needed before active"
if [ ${autoreboot} -eq 1 ]; then
sudo shutdown -r now
fi